View across centre of Hull, and river (7)
I believe the answer is:
vistula
'river' is the definition.
(Polish river)
'view across centre of hull' is the wordplay.
'view' becomes 'vista' (synonyms).
'across' indicates putting letters inside.
'centre of' indicates the central letters.
The middle letters of 'hull' are 'ul'.
'vista' placed around 'ul' is 'VISTULA'.
'and' acts as a link.
(Other definitions for vistula that I've seen before include "flower" , "Polish river - it's a luv (anag)" .)